Transit officials in San Diego are rolling out a new $12.5 million pilot program to test the region’s first electric buses.

People rolled through Rock Auto in El Cajon, Calif., in droves this month to sign a petition to overturn Gov. Jerry Brown’s so-called gas tax.

Joining a growing list of cities in California, San Diego announced Oct. 27 that its municipal vehicle fleet will become the largest in the nation to embrace renewable diesel — from street sweepers to refuse packers to fire trucks.